NX Nastran or LS-DYNA for crashworthiness simulation

[hokhay]

Dear all, I am using NX Nastran Basic for linear static simulation on vehicle. My company is now looking for a software to do crashworthiness simulation.
We now have two options, NX Nastran Non-linear Explicit solver SOL701 and LS-DYNA. LS-DYNA is about 20% more expensive than NX.

I have tried to search for comparison report for these two software. However for some reasons, no one has ever used NX for doing crashworthiness, not even in NX brochure. I know that the solver NX uses(ADINA)does not support air bag and window features, like LS-DYNA does. Are these the only reason why no one use NX?

Could any one with experience for using these software give me some suggestions please?

Thank you

 

[rb1957]

1) if no-one uses a software for the intended model, is it a viable option ?

2) if NX did everything (like the couple of things you mentioned it doesn't do) then i'd want to "calibrate" it against a known result (from LS-DYNA) before using it. and i'd have the NASTRAN people support this exercise (if they are trying to break into this field).

another day in paradise, or is paradise one day closer ?

 

[rstupplebeen]

Most crash simulations I have seen are either in ls-dyna or abaqus/explicit. I hope this helps.

Rob Stupplebeen

http://www.optimaldevice.com

https://sites.google.com/site/robertkstupplebeen/

 

[rickfischer51]

There is also PAM-Crash from ESI Group. I think they are big in Detroit.

Rick Fischer
Principal Engineer
Argonne National Laboratory

 

[hokhay]

There is also PAM-Crash from ESI Group. I think they are big in Detroit.

Thanks Rick,
It is good to know.